I myself would not use dewalt.
They have poor warranty and service. I work for a company that sells power tools and dewalt was designed for the home owner who's real need is not that of a blue collar.
All of their innards are plastic or low grade steel which fail ALOT. What they consider the end of your warranty is about 5 mins after you walk out the door with it. Yes the store you bought it from gives you a new one, but ask them if Black and Decker (who actually makes the dewalt line) gives them a new one to replace your old broken one.
I would go with a Makita, Bosch or Milwakee ... one with a 1/2 drive. Usually means 18.8v as opposed to the 14.4 or 12v which relates to more power, longer life and longer use. I use a Bosch 22618 which comes with a second battery, quick charge charger and carrying case WHICH most of them out there do not.